The number of charter flights to Bulgaria’s coastal city of Varna decreased by 80% in the current summer season. The number of charter flights to Burgas decreased by 83%, data of Varna and Burgas airports show. According to the Chief Executive of Bulgaria Air Hristo Todorov, quoted by BNT, the crews take all necessary measures for disinfection and distance during the flights. The Bulgarian planes have been equipped with hepa filter  which purifies air in cabins, Hristo Todorov says. All passengers are obliged to wear face masks during the flight. Disinfectants are placed in the sanitary facilities, Hristo Todorov further informs.